EP2855961B1 - Etrier de frein - Google Patents

Etrier de frein Download PDF

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Publication number
EP2855961B1
EP2855961B1 EP13727851.1A EP13727851A EP2855961B1 EP 2855961 B1 EP2855961 B1 EP 2855961B1 EP 13727851 A EP13727851 A EP 13727851A EP 2855961 B1 EP2855961 B1 EP 2855961B1
Authority
EP
European Patent Office
Prior art keywords
brake
brake caliper
legs
caliper according
pad
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13727851.1A
Other languages
German (de)
English (en)
Other versions
EP2855961A2 (fr
Inventor
Michael Ruopp
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gustav Magenwirth GmbH and Co KG
Original Assignee
Gustav Magenwirth GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gustav Magenwirth GmbH and Co KG filed Critical Gustav Magenwirth GmbH and Co KG
Publication of EP2855961A2 publication Critical patent/EP2855961A2/fr
Application granted granted Critical
Publication of EP2855961B1 publication Critical patent/EP2855961B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/58—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with eccentric or helical body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/005—Components of axially engaging brakes not otherwise provided for
    • F16D65/0068—Brake calipers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • F16D65/097—Resilient means interposed between pads and supporting members or other brake parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D2055/0004—Parts or details of disc brakes
    • F16D2055/0016—Brake calipers
    • F16D2055/0029—Retraction devices

Definitions

  • the invention relates to a brake caliper according to the preamble of claim 1, such as from WO-A-2010/073277 evident.
  • a brake caliper according to the preamble of claim 1, such as from WO-A-2010/073277 evident.
  • it is known to bias the brake pads with a spring device against the respective pistons.
  • the brake pads are always on the piston, which avoids rattling and a smooth running of the brake disc is guaranteed.
  • It is important in this case to set the force of the spring device such that it is smaller than the retraction force of the piston so as not to appreciably influence the retraction function of the piston surrounding the seal of the pressure chamber.
  • the force of the spring device should be large enough to ensure a good system of Bremsblags on the piston.
  • Known spring devices have a base, of which per each brake pad two legs extend approximately perpendicular to the base along the edges of the pads of the brake pads so that the pad is framed by the two legs. At the ends of the legs projections are provided which engage behind the pads.
  • These known spring devices have the disadvantage that they have a relatively large space require. Therefore, such spring devices are particularly disadvantageous for four-piston calipers, in which four individual pads are to be provided.
  • the invention has for its object to provide a brake caliper, which has a spring device for biasing the brake pads, which provides a sufficient spring force in a relatively small space. This object of the invention is achieved with a brake caliper according to the features of claim 1.
  • Advantageous embodiments of the invention are specified in the dependent claims or the description and in particular the following description.
  • This embodiment of the invention has the advantage that the largest possible surface area can be formed in a small space, while ensuring a good application of force of the spring means on the brake pads.
  • the brake caliper on the synopsis of the above features It is according to the invention also possible only one Provide sub-combination of the above features.
  • the opposing legs may extend from one side of the base to a brake pad disposed on the opposite side.
  • the opposite legs of the spring device can be arranged offset from each other.
  • the legs can each have a bending region and a counterbending region.
  • the opposite legs can each have a bending region, the distance of which is greater than the distance of the two corresponding opposing brake pads against which the legs abut.
  • the bending regions may extend over an angular range of more than 120 degrees, preferably over an angular range of more than 150 degrees, and preferably over an angular range of approximately 160 degrees.
  • the counter-bending regions may extend over an angular range of more than 30 degrees, preferably over an angular range of more than 60 degrees, and preferably over an angular range of approximately 70 degrees.
  • a brake caliper of a hydraulic brake system with a plurality of pistons, which are arranged displaceably in each case in a cylinder along the axis of the cylinder, a plurality of brake pads, which are pressed by the pistons against a brake disc during actuation of the brake, and bridges, which connect the opposite portions of the brake calliper with each other, indicated, wherein the bridges have at least one and preferably a plurality of cooling fins.
  • This embodiment of the invention has the advantage that a good cooling can be achieved with a very small space.
  • the brake caliper can have four pistons which are arranged in two cylinder pairs lying opposite one another.
  • the brake caliper can have four brake linings which are each assigned to a piston.
  • the brake pads may comprise a split brake pad, between which extends a groove for receiving a leg of the spring means.
  • the legs have at their ends holding portions. These engage the lower edge of the brake pads.
  • the legs preferably extend in a groove which is provided between lining parts of the brake lining or formed in the lining.
  • the holding portions in engagement openings in the lining carrier intervention.
  • the engagement openings may be provided in recesses of the covering. Since the legs are shorter in these embodiments, it is advantageous to make the base of the spring device wider, so that the pivot points or bending regions of the opposing legs are arranged further apart.
  • a hydraulic brake in particular a hydraulic disc brake is specified with a brake caliper according to the invention.
  • FIGS. 1 to 4 and 7 to 9 and 11 to 12 such as 16 to 23 show a brake caliper according to an embodiment of the invention.
  • the brake caliper 100 has four cylinders 101 arranged in pairs opposite one another. Between the cylinders 101, a brake chute 102 is arranged, in which a brake disc, not shown, rotates.
  • each piston not shown, are arranged, which move during the actuation of the brake along the axis of the corresponding cylinder 101 and each press a brake pad 110 against the brake disc to delay their movement.
  • the pistons retract into the corresponding cylinder 101. So that the brake pads do not rattle these are biased with a spring device 120 against the piston.
  • a pressure chamber 103 and a groove 104 are provided in each case.
  • a seal not shown, is provided, which seals the pressure chamber 103 against the piston.
  • the groove 104 has a phase 105, in which the seal applies during braking.
  • the seal returns to its relaxed position and thus pulls the piston away from the brake disc.
  • the spring means 120 of the brake pad 110 is clamped against the piston and thus also pulled away from the brake disc when the braking operation is terminated.
  • the phase has an angle of about 30 °, while known phases have an angle of slightly over 45 °.
  • the width of the phase ie, the dimension along the axis of the cylinder
  • known phases have a width of about 0.6 mm.
  • the brake caliper 100 has two connecting portions 106, with which it can be fixed in a known manner to the barrel of a fork or on the rear of a bicycle.
  • bolt receptacles 107 are provided, as best in Fig. 21 able to see.
  • bolts 150 are arranged, which, as can be seen in the FIGS. 11 and 12 can see the brake pads 110 and the spring device 120 hold.
  • the brake caliper 100 in the FIGS. 11 and 12 not shown, so you can see the interaction between the bolt 150, the brake pads 110 and the spring means 120 better.
  • the bolts 150 each have a shaft 151, a head 152 and a thickening 153. With a bolt 150, a pair of brake pads 110 and an associated spring device 120 are respectively arranged on the brake caliper 100.
  • the brake pads 110 on a carrier 111 has a pad carrier surface 112 and an extension 113.
  • a corrugation is provided at the extension 113. This has the advantage that you can better grip the brake pad 110 with the fingernails, so that the brake pad 110 can be better kept when inserting and removing and does not slip into the brake chute.
  • This corrugated surface on the extension 113 is not known in the prior art and may constitute an independent invention.
  • a fastening opening 115 is provided, through which the bolt 150 engages with its shaft 151 in order to arrange the brake lining 110 on the brake caliper 100 by the bolt 150 engaging in the bolt receptacles 107.
  • the brake pad 110 has a lower edge 116, engage the holding portions 128 of the legs 124 of the spring device 120 to secure the brake pad when the bolt is pulled out, for example, to change the brake pads 110 from the bolt receptacles 107.
  • a pad 118 is arranged, which is divided into two parts. Between the two parts of the pad 118 extends a groove 119, in which a leg 124 of the spring device 120 is arranged.
  • the groove may not be formed over the full thickness of the pad 118, but only a sufficient depression in the pad 118, which is sufficient to accommodate the leg 124 to a certain desired wear of the pad 118.
  • the brake pad 110 has an engagement opening 117 into which the holding section 128 of the leg 124 of the spring device 120 can engage.
  • the legs 124 of the spring device 120 are shorter and the base 121 of the spring device 120 in FIG Compared to the in the FIGS. 7 to 9 and 11 to 12 shown embodiment wider.
  • the pad 118 has a recess 1191 in which the engagement opening is formed. This embodiment has the advantage that the available covering surface is larger.
  • the spring device 120 has a base 121, on which the legs 124 engage.
  • the legs 124 are arranged on opposite sides of the base 121 offset from one another in such a way that they are arranged side by side.
  • the legs 124 each have a flexure 122 in which the legs 124 extend at an angle of about 160 degrees toward the other side of the base.
  • the legs 124 each have a counterbending region 123 in which the legs 124 extend through an angle of approximately 70 degrees in the direction. The bending region and the counterbending region ensure that the legs 124 run from one side of the base 121 of the spring device 120 to the other side of the base 121 of the spring device 120 and engage there against the opposite brake lining 110.
  • the formation of a four-piston brake caliper with four individual pads has the advantage that same piston diameter can be provided for a uniform contact pressure of the pads on the brake disc. By contrast, when using only two brake pads (one per side), it is desirable to use pistons of different diameters in the direction of travel seen front and rear area of the brake pad to achieve similar contact forces.
  • FIGS. 5 and 6 show details of an alternative embodiment of the invention, wherein in connection with these figures, substantially only the differences from the embodiments of the invention described in connection with the other figures will be explained and otherwise reference is made to the description thereof.
  • the brake caliper 100 has three bridges 130, which connect the both sides of the brake disc, not shown, cylinder 101 in a known manner with each other.
  • each cooling fins 132 are provided at the edges, between which a recess 131 is arranged. This has the advantage that, compared with the prior art, with a greater rigidity, a larger surface is also formed, as a result of which the brake caliper is better cooled.
  • FIG. 24 shows details of an alternative embodiment of the invention, wherein in connection with this figure, substantially only the differences from the embodiments of the invention described in connection with the other figures will be explained and, moreover, to the description thereof.
  • a plurality of cooling fins 132 and 133 are provided on the bridge 130 in order to achieve even greater cooling.
  • Such cooling fins 132, 133 may be provided on a bridge 130 or on a plurality of bridges 130 or on all bridges 130.
  • FIGS. 16 to 20 show the structure of the lid 140, with the open cylinder 101 is closed.
  • the brake caliper 100 has opposed cylinders 101, one of which is open to allow the pistons to be inserted into the cylinders 101. After mounting the piston, the open side of the cylinder is closed with the cover 140.
  • the lid 140 has a closure member 141 and a diaphragm 142. When closing the closure member 141 is screwed with its threaded portion 143 in a corresponding thread of the cylinder 101. For this purpose, a suitable tool can engage in a tool engagement section 144. After the opening is closed, the aperture 142 can be inserted into the closure member 141.
  • the panel 142 engages the tool engaging portion 144 and is secured thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Claims (15)

  1. Étrier de frein (100) d'un système de freinage hydraulique comportant plusieurs pistons qui sont agencés chacun dans un cylindre (101) de façon mobile en translation le long de l'axe du cylindre (101), plusieurs garnitures de frein (110) qui, lors d'un actionnement du frein, sont pressées contre un disque de frein par les pistons, et au moins un moyen formant ressort (120) qui présente une embase (121) et des branches opposées (124) qui s'étendent depuis l'embase (121) jusqu'aux garnitures de frein (110),
    caractérisé en ce que
    les branches du moyen formant ressort comprennent des portions de retenue (128) à leurs extrémités, qui viennent attaquer l'arête inférieure des garnitures de frein (116),
    et en ce que les branches (124) opposées l'une à l'autre s'étendent depuis un côté de l'embase (121) s'étendant en direction axiale jusqu'à une garniture de frein (110) agencée sur le côté opposé.
  2. Étrier de frein selon la revendication 1,
    caractérisé en ce que
    les branches (124) opposées l'une à l'autre du moyen formant ressort (120) sont agencées en décalage l'une de l'autre.
  3. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    les branches (124) présentent chacune une zone cintrée (122) et une zone cintrée en sens contraire (123).
  4. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    les branches (124) opposées l'une à l'autre présentent chacune une zone cintrée (122), dont la distance est supérieure à la distance des deux garnitures de frein correspondantes (110) opposées l'une à l'autre contre lesquelles s'appuient les branches.
  5. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    les zones cintrées s'étendent sur une plage angulaire de plus de 120 degrés.
  6. Étrier de frein selon la revendication 5,
    caractérisé en ce que
    les zones cintrées s'étendent sur une plage angulaire de plus de 150 degrés.
  7. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    les zones cintrées en sens contraire s'étendent sur une plage angulaire de plus de 30 degrés.
  8. Étrier de frein selon la revendication 5,
    caractérisé en ce que
    les zones cintrées en sens contraire s'étendent sur une plage angulaire de plus de 60 degrés.
  9. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    l'étrier de frein comprend quatre pistons qui sont agencés dans deux paires de cylindres opposées l'une à l'autre.
  10. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    l'étrier de frein comprend quatre garnitures de frein qui sont associées chacune à un piston.
  11. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    les garnitures de frein présentent une garniture de frein divisée, entre lesquelles s'étend une rainure pour loger une branche du moyen formant ressort.
  12. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    les branches s'étendant dans une rainure qui est prévue entre des parties de la garniture de frein ou qui est réalisée dans la garniture.
  13. Étrier de frein selon l'une des revendications précédentes,
    caractérisé en ce que
    les portions de retenue viennent s'engager dans des ouvertures d'engagement dans le porte-garniture.
  14. Étrier de frein selon la revendication 13,
    caractérisé en ce que
    les ouvertures d'engagement sont prévues dans des échancrures de la garniture.
  15. Frein hydraulique, en particulier frein hydraulique à disque comportant un étrier de frein selon l'une des revendications précédentes.
EP13727851.1A 2012-06-02 2013-06-03 Etrier de frein Active EP2855961B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012209341.9A DE102012209341B4 (de) 2012-06-02 2012-06-02 Bremszange
PCT/EP2013/061365 WO2013178822A2 (fr) 2012-06-02 2013-06-03 Etrier de frein

Publications (2)

Publication Number Publication Date
EP2855961A2 EP2855961A2 (fr) 2015-04-08
EP2855961B1 true EP2855961B1 (fr) 2018-04-11

Family

ID=48579043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13727851.1A Active EP2855961B1 (fr) 2012-06-02 2013-06-03 Etrier de frein

Country Status (5)

Country Link
US (1) US9574631B2 (fr)
EP (1) EP2855961B1 (fr)
DE (1) DE102012209341B4 (fr)
TW (1) TWI604138B (fr)
WO (1) WO2013178822A2 (fr)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
ITMI20132215A1 (it) * 2013-12-30 2015-07-01 Freni Brembo Spa Corpo pinza di un freno a disco
GB2551301A (en) * 2015-07-30 2017-12-13 Jaguar Land Rover Ltd Brake caliper
ITUA20164801A1 (it) 2016-06-30 2017-12-30 Freni Brembo Spa Pinza di freno a disco
TWI697436B (zh) * 2019-07-03 2020-07-01 彥豪金屬工業股份有限公司 自行車煞車組件
US11926390B2 (en) * 2022-01-17 2024-03-12 Sram, Llc Flat mount brake caliper for bicycle
AT526073B1 (de) 2022-09-21 2023-11-15 Dobrovz Thomas Bremsenkühlung
DE102023101845A1 (de) 2023-01-25 2024-07-25 Shimano Inc. Bremssattel und bremsbelag für muskelkraftbetriebenes fahrzeug

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Also Published As

Publication number Publication date
DE102012209341A1 (de) 2013-12-05
TWI604138B (zh) 2017-11-01
US20150122596A1 (en) 2015-05-07
WO2013178822A3 (fr) 2014-01-30
DE102012209341B4 (de) 2024-09-19
WO2013178822A2 (fr) 2013-12-05
EP2855961A2 (fr) 2015-04-08
TW201405028A (zh) 2014-02-01
US9574631B2 (en) 2017-02-21

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